Ferricyanide

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What Wikipedia says

Ferricyanide is the name of the anion [Fe(CN)6]3−. It is also called hexacyanoferrate(III) and in rare, but systematic nomenclature, hexacyanidoferrate(III). The most common salt of this anion is potassium ferricyanide, a red crystalline material that is used as an oxidant in organic chemistry.

Excerpt from the Wikipedia article “Ferricyanide”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Roland Mattern, Public domain, via Wikimedia Commons.